DING LONG(SZ:300054) Xin Lang Cai Jing·2026-01-29 06:23Group 1 - The core point of the news is that Dinglong Co., Ltd. experienced a decline of 5.04% in its stock price, reaching 44.27 yuan per share, with a trading volume of 8.52 billion yuan and a turnover rate of 2.55%, resulting in a total market capitalization of 419.39 billion yuan [1] - Dinglong Co., Ltd. is based in Wuhan, Hubei Province, and was established on July 11, 2000, with its listing date on February 11, 2010. The company's main business involves general consumables for printing and copying, as well as optoelectronic semiconductor process materials. The revenue composition is 99.47% from semiconductor materials, chips, and printing consumables, with the remaining 0.53% from other sources [1] Group 2 - From the perspective of the top ten circulating shareholders, Southern Fund's Southern CSI 500 ETF (510500) reduced its holdings by 158,800 shares in the third quarter, now holding 10,941,800 shares, which accounts for 1.49% of the circulating shares. The estimated floating loss today is approximately 25.71 million yuan [2] - The Southern CSI 500 ETF (510500) was established on February 6, 2013, with a latest scale of 144.69 billion yuan. Year-to-date returns are 15.26%, ranking 552 out of 5,551 in its category; the one-year return is 56.56%, ranking 1,089 out of 4,285; and since inception, the return is 190.06% [2]